Newbie here advice

Hi there , daughter is nearly 17 and missed a lot of education as school failed her , so been at home long time and got diagnosed with autism last year, I’m her carer and it’s just me and her no family , I’m on benefits and she gets pip but now they want to stop £330 month because she can’t go to college because of her mental health as she don’t leave the house , I seriously feel like we are being punished because of her autism and mental health , as we all know the benefit system is crap and living today in this country is so exspensive , is this right ?